Display screen with a graphical user interface



The sole FIGURE is a front view of a display screen with a graphical user interface showing the claimed design.

The broken lines shown in the sole FIGURE show portions of the environment and form no part of the claimed design. The lines depicting the device in which the display screen is displayed, the x icon, the back icon, the upper circle and elements within the upper circle, the central rectangle and elements within the central rectangle, the lower sliding element and lock and silhouettes to each side of the sliding element, and all of the illustrated text are broken lines and form no part of the claimed design. 

CLAIM The ornamental design for a display screen with a graphical user interface, as shown and described. 